Around 1 a.m. on April 15, 2012, the woman says she was walking near Vegas Drive and Tonopah when a stranger began following her. She called her husband and then 911, but the man grabbed her from behind and pulled her into a desert lot.

"He had both hands around my neck choking me. I'm trying to turn over so I can keep airway, so I can breathe because the way he was choking me I thought I was going to die," she said.

The woman says the man sexually assaulted her, although she managed to grab a rock and hit him in the head twice.

Prosecutors say that man was Clay, who left the scene of that crime to commit another, just a half mile away. Clay is accused of breaking into the home of the Martinez family, raping and murdering Yadira Martinez and her 10-year-old daughter Karla.